I feel my excessive jealousy comes from feeling not good enough. How do I heal it?

Excessive jealousy is usually the voice of inner fear, not a real sign that your spouse is betraying you. Feeling not good enough makes you think your spouse is always looking for someone else, when that is not necessarily true. Begin by rebuilding your self-worth from a solid source: your relationship with Allah, not comparison. Remember that your worth before Allah lies in taqwa (God-consciousness), not in being perfect in people's eyes. Share this feeling with your spouse so they can reassure you, not to use it as a reason to control them. If this low self-esteem runs deep, a counsellor can help you heal. See mental health.